Recently, Irwin discovered a previously unknown cache of unpublished Flora artwork which showed a new, more demented side of the artist. From an interview with the AIGA Journal of Design, Irwin described the untombed cache of Flora art:

"A lot of his work is cartoonish. It's fun to look at, evocative of childhood nostalgia and dereliction of adult responsibility. There are clowns and kitty cats, grinning faces and beaming suns. But despite his later reputation for G-rated kid-lit, Flora, in many of these works, did not restrain himself from expressing darker impulses. There's no shortage of guns and knives and fang-baring snakes. Muggers run amok, demons frolic with rouged harlots and Flora's characters suffer from severe disfigurement. These elements - the banal and the violent - often co-exist within inches of each other on the canvas."